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MegaGlest / Patch for FPS Limit for Megaglest 3.5.2

« on: 5 September 2011, 16:01:47 »

Hi people,

Here's the patch for limiting megaglest's FPS, since it would otherwise burn up my CPU.

Since I don't know how to attach file, I will just paste the content of the patch:

Code: [Select]

--- ./source/glest_game/main/main.cpp.orig      2011-09-05 11:52:33.232676996 -0400
+++ ./source/glest_game/main/main.cpp   2011-07-16 13:47:35.716676997 -0400
@@ -2999,8 +2999,16 @@

                //time_t lastTextureLoadEvent = time(NULL);
                //main loop
+               int interval = 1;
                while(Window::handleEvent()) {
                        program->loop();
+                       if (program->getFPS() > 1) {
+                               if (interval == 1) interval = (1000000.00 / ((double) program->getFPS()));
+                               usleep(interval);
+                       }
+                       else if (program->getFPS() == 0) {
+                               usleep(30000);
+                       }
                        // Because OpenGL really doesn't do multi-threading well
 //                     if(difftime(time(NULL),lastTextureLoadEvent) >= 3) {
 //                             lastTextureLoadEvent = time(NULL);
--- ./source/glest_game/main/program.cpp.orig   2011-09-05 11:52:43.845676996 -0400
+++ ./source/glest_game/main/program.cpp        2011-07-16 10:34:26.323676997 -0400
@@ -575,13 +575,17 @@
        if(SystemFlags::getSystemSettingType(SystemFlags::debugSystem).enabled) SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
 }

+int Program::getFPS(){
+       return freq;
+}
+
 void Program::setDisplaySettings(){

        Config &config= Config::getInstance();

-       if(!config.getBool("Windowed")) {
+       freq = config.getInt("RefreshFrequency");

-               int freq= config.getInt("RefreshFrequency");
+       if(!config.getBool("Windowed")) {
                int colorBits= config.getInt("ColorBits");
                int screenWidth= config.getInt("ScreenWidth");
                int screenHeight= config.getInt("ScreenHeight");
--- ./source/glest_game/main/program.h.orig     2011-09-05 11:52:50.115676996 -0400
+++ ./source/glest_game/main/program.h  2011-07-16 08:50:46.762676996 -0400
@@ -139,6 +139,7 @@

     GraphicMessageBox msgBox;
     int skipRenderFrameCount;
+    int freq;

 public:
     Program();
@@ -151,6 +152,7 @@
        void initServer(WindowGl *window,bool autostart=false,bool openNetworkSlots=false);
        void initClient(WindowGl *window, const Ip &serverIp);
        void initScenario(WindowGl *window, string autoloadScenarioName);
+       int getFPS();

        //main
     void keyDown(char key);